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FINANCING ARRANGEMENTS - Narrative (Details) - USD ($)
3 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Debt Instrument [Line Items]    
Debt fair value $ 1,700,000,000 $ 1,600,000,000
Amount drew down 1,720,278,000 1,572,162,000
Available to borrow and outstanding letters of credit 80,700,000 229,200,000
Outstanding letters of credit $ 141,200,000 146,900,000
Effective interest rate percentage 4.67%  
Derivative liability $ 38,100,000 20,800,000
Term Loans with Interest Rate Swap Agreements    
Debt Instrument [Line Items]    
Debt outstanding 350,000,000.0  
Revolving credit facility | Line of Credit    
Debt Instrument [Line Items]    
Revolving credit facility maximum borrowing capacity 400,000,000.0  
Amount drew down 150,000,000.0 $ 0
Interest Rate Swap    
Debt Instrument [Line Items]    
Notional amount of interest rate swap agreements $ 350,000,000.0  
Interest rate percentage 2.92%